| # RUN: llc %s -o - -run-pass=removeredundantdebugvalues | FileCheck --implicit-check-not=DBG_VALUE %s |
| |
| ## This checks that the RemoveRedundantDebugValues removes redundant |
| ## DBG_VALUEs. The MIR was hand-written, and foo{[2-6]}() are just |
| ## copies of foo(), with an extra instruction that modifies the $edi register |
| ## and extra (artificial) DBG_VALUE and DBG_VALUE_LIST instructions. |
| |
| # CHECK-LABEL: foo |
| # CHECK-LABEL: bb.0.entry: |
| # CHECK: DBG_VALUE $edi |
| # CHECK-NOT: DBG_VALUE $edi |
| # CHECK: frame-setup PUSH64r |
| # CHECK: MOV32mr $rip, 1, $noreg |
| # CHECK-NOT: DBG_VALUE $edi |
| |
| # CHECK-LABEL: foo6 |
| # CHECK-LABEL: bb.0.entry: |
| # CHECK: DBG_VALUE 0 |
| # CHECK: DBG_VALUE 1 |
| # CHECK: frame-setup PUSH64r |
| |
| # CHECK-LABEL: foo2 |
| # CHECK-LABEL: bb.0.entry: |
| # CHECK: DBG_VALUE $edi |
| # CHECK: MOV32mr $rip, 1, $noreg |
| # CHECK: DBG_VALUE $edi |
| |
| # CHECK-LABEL: foo3 |
| # CHECK-LABEL: bb.0.entry: |
| # CHECK: DBG_VALUE $edi, {{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32) |
| # CHECK: DBG_VALUE $esi, {{.*}}, !DIExpression() |
| # CHECK: DBG_VALUE $edi, {{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32) |
| |
| # CHECK-LABEL: foo4 |
| # CHECK-LABEL: bb.0.entry: |
| # CHECK: DBG_VALUE $edi, {{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32) |
| # CHECK: DBG_VALUE_LIST !{{.*}} |
| # CHECK: DBG_VALUE $edi, {{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32) |
| |
| # CHECK-LABEL: foo5 |
| # CHECK-LABEL: bb.0.entry: |
| # CHECK: DBG_VALUE $edi, {{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32) |
| # CHECK: DBG_VALUE 0, {{.*}}, !DIExpression() |
| # CHECK: DBG_VALUE $edi, {{.*}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32) |
| |
| --- | |
| ; ModuleID = 'test.ll' |
| source_filename = "test.c" |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @side_effect = external dso_local local_unnamed_addr global i32, align 4 |
| @value = external dso_local local_unnamed_addr global i32, align 4 |
| |
| ; Function Attrs: nounwind uwtable |
| define dso_local i32 @foo(i32 %param) local_unnamed_addr !dbg !8 { |
| entry: |
| call void @llvm.dbg.value(metadata i32 %param, metadata !13, metadata !DIExpression()), !dbg !14 |
| store i32 %param, i32* @side_effect, align 4, !dbg !15 |
| %0 = load i32, i32* @value, align 4, !dbg !20 |
| call void @llvm.dbg.value(metadata i32 %0, metadata !13, metadata !DIExpression()), !dbg !14 |
| tail call void @bar(i32 %0), !dbg !21 |
| ret i32 0, !dbg !22 |
| } |
| |
| define dso_local i32 @foo6(i32 %param) local_unnamed_addr !dbg !34 { |
| entry: |
| store i32 %param, i32* @side_effect, align 4, !dbg !35 |
| %0 = load i32, i32* @value, align 4, !dbg !35 |
| tail call void @bar(i32 %0), !dbg !35 |
| ret i32 0, !dbg !35 |
| } |
| |
| ; Function Attrs: nounwind uwtable |
| define dso_local i32 @foo2(i32 %param) local_unnamed_addr !dbg !26 { |
| entry: |
| store i32 %param, i32* @side_effect, align 4, !dbg !27 |
| %0 = load i32, i32* @value, align 4, !dbg !27 |
| tail call void @bar(i32 %0), !dbg !27 |
| ret i32 0, !dbg !27 |
| } |
| |
| ; Function Attrs: nounwind uwtable |
| define dso_local i32 @foo3(i32 %param) local_unnamed_addr !dbg !28 { |
| entry: |
| store i32 %param, i32* @side_effect, align 4, !dbg !29 |
| %0 = load i32, i32* @value, align 4, !dbg !29 |
| tail call void @bar(i32 %0), !dbg !29 |
| ret i32 0, !dbg !29 |
| } |
| |
| ; Function Attrs: nounwind uwtable |
| define dso_local i32 @foo4(i32 %param) local_unnamed_addr !dbg !30 { |
| entry: |
| store i32 %param, i32* @side_effect, align 4, !dbg !31 |
| %0 = load i32, i32* @value, align 4, !dbg !31 |
| tail call void @bar(i32 %0), !dbg !31 |
| ret i32 0, !dbg !31 |
| } |
| |
| ; Function Attrs: nounwind uwtable |
| define dso_local i32 @foo5(i32 %param) local_unnamed_addr !dbg !32 { |
| entry: |
| store i32 %param, i32* @side_effect, align 4, !dbg !33 |
| %0 = load i32, i32* @value, align 4, !dbg !33 |
| tail call void @bar(i32 %0), !dbg !33 |
| ret i32 0, !dbg !33 |
| } |
| |
| declare !dbg !23 dso_local void @bar(i32) local_unnamed_addr |
| |
| ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5, !6} |
| !llvm.ident = !{!7} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 13.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None) |
| !1 = !DIFile(filename: "test.c", directory: "/dir") |
| !2 = !{} |
| !3 = !{i32 7, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{i32 7, !"uwtable", i32 1} |
| !7 = !{!"clang version 13.0.0"} |
| !8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12) |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{!11, !11} |
| !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !12 = !{!13} |
| !13 = !DILocalVariable(name: "param", arg: 1, scope: !8, file: !1, line: 4, type: !11) |
| !14 = !DILocation(line: 0, scope: !8) |
| !15 = !DILocation(line: 5, column: 17, scope: !8) |
| !20 = !DILocation(line: 6, column: 13, scope: !8) |
| !21 = !DILocation(line: 7, column: 5, scope: !8) |
| !22 = !DILocation(line: 8, column: 5, scope: !8) |
| !23 = !DISubprogram(name: "bar", scope: !1, file: !1, line: 1, type: !24, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) |
| !24 = !DISubroutineType(types: !25) |
| !25 = !{null, !11} |
| !26 = distinct !DISubprogram(name: "foo2", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12) |
| !27 = !DILocation(line: 0, scope: !26) |
| !28 = distinct !DISubprogram(name: "foo3", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12) |
| !29 = !DILocation(line: 0, scope: !28) |
| !30 = distinct !DISubprogram(name: "foo4", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12) |
| !31 = !DILocation(line: 0, scope: !30) |
| !32 = distinct !DISubprogram(name: "foo5", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12) |
| !33 = !DILocation(line: 0, scope: !32) |
| !34 = distinct !DISubprogram(name: "foo6", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12) |
| !35 = !DILocation(line: 0, scope: !34) |
| |
| ... |
| --- |
| name: foo |
| alignment: 16 |
| liveins: |
| - { reg: '$edi', virtual-reg: '' } |
| body: | |
| bb.0.entry: |
| liveins: $edi, $esi |
| |
| DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14 |
| DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14 |
| frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $esi, debug-location !15 :: (store 4 into @side_effect) |
| DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14 |
| CALL64pcrel32 @bar, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, debug-location !21 |
| $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22 |
| $rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22 |
| CFI_INSTRUCTION def_cfa_offset 8, debug-location !22 |
| RET64 killed $eax, debug-location !22 |
| |
| ... |
| --- |
| name: foo2 |
| alignment: 16 |
| liveins: |
| - { reg: '$edi', virtual-reg: '' } |
| body: | |
| bb.0.entry: |
| liveins: $edi, $esi |
| |
| DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14 |
| DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14 |
| frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $esi, debug-location !15 :: (store 4 into @side_effect) |
| renamable $edi = MOV32rm $rip, 1, $noreg, @value, $noreg, debug-location !20 :: (dereferenceable load 4 from @value) |
| DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14 |
| CALL64pcrel32 @bar, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, debug-location !21 |
| $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22 |
| $rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22 |
| CFI_INSTRUCTION def_cfa_offset 8, debug-location !22 |
| RET64 killed $eax, debug-location !22 |
| |
| ... |
| --- |
| name: foo3 |
| alignment: 16 |
| liveins: |
| - { reg: '$edi', virtual-reg: '' } |
| body: | |
| bb.0.entry: |
| liveins: $edi, $esi |
| |
| DBG_VALUE $edi, $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !14 |
| frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $esi, debug-location !15 :: (store 4 into @side_effect) |
| renamable $esi = MOV32rm $rip, 1, $noreg, @value, $noreg, debug-location !20 :: (dereferenceable load 4 from @value) |
| DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !14 |
| $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22 |
| DBG_VALUE $edi, $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !14 |
| $rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22 |
| CFI_INSTRUCTION def_cfa_offset 8, debug-location !22 |
| RET64 killed $eax, debug-location !22 |
| |
| ... |
| --- |
| name: foo4 |
| alignment: 16 |
| liveins: |
| - { reg: '$edi', virtual-reg: '' } |
| body: | |
| bb.0.entry: |
| liveins: $edi, $esi |
| |
| DBG_VALUE $edi, $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !14 |
| frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $esi, debug-location !15 :: (store 4 into @side_effect) |
| renamable $esi = MOV32rm $rip, 1, $noreg, @value, $noreg, debug-location !20 :: (dereferenceable load 4 from @value) |
| DBG_VALUE_LIST !13, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_stack_value), $edi, $esi, debug-location !14 |
| $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22 |
| DBG_VALUE $edi, $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !14 |
| $rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22 |
| CFI_INSTRUCTION def_cfa_offset 8, debug-location !22 |
| RET64 killed $eax, debug-location !22 |
| |
| ... |
| --- |
| name: foo5 |
| alignment: 16 |
| liveins: |
| - { reg: '$edi', virtual-reg: '' } |
| body: | |
| bb.0.entry: |
| liveins: $edi, $esi |
| |
| DBG_VALUE $edi, $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !14 |
| frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $esi, debug-location !15 :: (store 4 into @side_effect) |
| renamable $esi = MOV32rm $rip, 1, $noreg, @value, $noreg, debug-location !20 :: (dereferenceable load 4 from @value) |
| DBG_VALUE 0, $noreg, !13, !DIExpression(), debug-location !14 |
| $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22 |
| DBG_VALUE $edi, $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !14 |
| $rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22 |
| CFI_INSTRUCTION def_cfa_offset 8, debug-location !22 |
| RET64 killed $eax, debug-location !22 |
| |
| ... |
| --- |
| name: foo6 |
| alignment: 16 |
| liveins: |
| - { reg: '$edi', virtual-reg: '' } |
| body: | |
| bb.0.entry: |
| liveins: $edi, $esi |
| |
| DBG_VALUE 0, $noreg, !13, !DIExpression(), debug-location !14 |
| DBG_VALUE 1, $noreg, !13, !DIExpression(), debug-location !14 |
| frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $esi, debug-location !15 :: (store 4 into @side_effect) |
| renamable $esi = MOV32rm $rip, 1, $noreg, @value, $noreg, debug-location !20 :: (dereferenceable load 4 from @value) |
| $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22 |
| $rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22 |
| CFI_INSTRUCTION def_cfa_offset 8, debug-location !22 |
| RET64 killed $eax, debug-location !22 |
| |
| ... |
